Patents by Inventor Katsuyuki Tamai

Katsuyuki Tamai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20070202096
    Abstract: The invention provides novel XAF nucleic acid sequences. Also provided are XAF polypeptides, anti-XAF antibodies, and methods for modulating apoptosis and detecting compounds which modulate apoptosis.
    Type: Application
    Filed: August 4, 2006
    Publication date: August 30, 2007
    Inventors: Robert Korneluk, Katsuyuki Tamai, Peter Liston, Alexander MacKenzie
  • Patent number: 7256013
    Abstract: The acetylation level of a peptide is determined utilizing the fact that the changes in the acetylation level are reflected in the sensitivity of the substrate peptide to a peptidase. This method can be used for measuring activities of deacetylase and acetylase, and also enables screening for substances that influence the activity of these enzymes. The deacetylase activity can be measured by a simple procedure according to the present invention.
    Type: Grant
    Filed: October 31, 2005
    Date of Patent: August 14, 2007
    Assignee: Cyclex Co., Ltd.
    Inventors: Katsuyuki Tamai, Toshiaki Miyazaki, Emi Wada, Ayumi Tatsuzawa
  • Publication number: 20070072217
    Abstract: The invention provides novel XAF nucleic acid sequences. Also provided are XAF polypeptides, anti-XAF antibodies, and methods for modulating apoptosis and detecting compounds which modulate apoptosis.
    Type: Application
    Filed: August 4, 2006
    Publication date: March 29, 2007
    Inventors: Robert Korneluk, Katsuyuki Tamai, Peter Liston, Alexander MacKenzie
  • Patent number: 7033778
    Abstract: The acetylation level of a peptide is determined utilizing the fact that the changes in the acetylation level are reflected in the sensitivity of the substrate peptide to a peptidase. This method can be used for measuring activities of deacetylase and acetylase, and also enables screening for substances that influence the activity of these enzymes. The deacetylase activity can be measured by a simple procedure according to the present invention.
    Type: Grant
    Filed: May 29, 2002
    Date of Patent: April 25, 2006
    Assignee: Cyclex Co., Ltd.
    Inventors: Katsuyuki Tamai, Toshiaki Miyazaki, Emi Wada, Ayumi Tatsuzawa
  • Publication number: 20060040336
    Abstract: The acetylation level of a peptide is determined utilizing the fact that the changes in the acetylation level are reflected in the sensitivity of the substrate peptide to a peptidase. This method can be used for measuring activities of deacetylase and acetylase, and also enables screening for substances that influence the activity of these enzymes. The deacetylase activity can be measured by a simple procedure according to the present invention.
    Type: Application
    Filed: October 31, 2005
    Publication date: February 23, 2006
    Inventors: Katsuyuki Tamai, Toshiaki Miyazaki, Emi Wada, Ayumi Tatsuzawa
  • Publication number: 20060040862
    Abstract: The invention provides novel XAF nucleic acid sequences. Also provided are XAF polypeptides, anti-XAF antibodies, and methods for modulating apoptosis and detecting compounds which modulate apoptosis.
    Type: Application
    Filed: August 16, 2005
    Publication date: February 23, 2006
    Applicant: Aegera Therapeutics Inc.
    Inventors: Robert Korneluk, Katsuyuki Tamai, Peter Liston, Alexander MacKenzie
  • Publication number: 20060035296
    Abstract: A method for simply and conveniently detecting acetyltransferase and deacetylase activities of proteins by executing an acetylation reaction of a peptide substrate with an acetyltransferase, or a deacetylation reaction of an acetylated peptide substrate with a deacetylase, and after the completion of these reactions, detecting the acetyl group bound to the peptide substrate by using an anti-acetylated peptide antibody. This system for detecting acetyltransferase and deacetylase activities using the anti-acetylated peptide antibody enables screening inhibitors or enhancers of acetyltransferase and deacetylase. A system for screening deacetylase inhibitors or acetyltransferase enhancers using cultured cells is also provided.
    Type: Application
    Filed: February 3, 2005
    Publication date: February 16, 2006
    Applicant: Medical & Biological Laboratories Co., Ltd.
    Inventors: Yoichi Taya, Katsuyuki Tamai, Toshiaki Miyazaki
  • Publication number: 20050250166
    Abstract: The present invention provides methods for measuring the phosphorylation activity of Cdc7-ASK kinase complex by using as an indicator the level of phosphorylation at a phosphorylation site of MCM, which is a substrate of Cdc7-ASK kinase complex. The effects of test compounds on the phosphorylation activity of Cdc7-ASK kinase complex can also be evaluated based on these measurement methods. Compounds that inhibit this phosphorylation activity are useful as anti-cancer agents having superior specificity for cancer.
    Type: Application
    Filed: March 12, 2003
    Publication date: November 10, 2005
    Applicant: Medical and Biological Laboratories Co. Ltd.
    Inventors: Hisao Masai, Katsuyuki Tamai
  • Patent number: 6946544
    Abstract: The invention provides novel XAF nucleic acid sequences. Also provided are XAF polypeptides, anti-XAF antibodies, and methods for modulating apoptosis and detecting compounds which modulate apoptosis.
    Type: Grant
    Filed: November 5, 2002
    Date of Patent: September 20, 2005
    Assignee: Aegera Therapeutics Inc.
    Inventors: Robert G. Korneluk, Katsuyuki Tamai, Peter Liston, Alexander E. MacKenzie
  • Patent number: 6884597
    Abstract: A method for simply and conveniently detecting acetyltransferase and deacetylase activities of proteins by executing an acetylation reaction of a peptide substrate with an acetyltransferase, or a deacetylation reaction of an acetylated peptide substrate with a deacetylase, and after the completion of these reactions, detecting the acetyl group bound to the peptide substrate by using an anti-acetylated peptide antibody. This system for detecting acetyltransferase and deacetylase activities using the anti-acetylated peptide antibody enables screening inhibitors or enhancers of acetyltransferase and deacetylase. A system for screening deacetylase inhibitors or acetyltransferase enhancers using cultured cells is also provided.
    Type: Grant
    Filed: July 18, 2000
    Date of Patent: April 26, 2005
    Assignee: Medical & Biological Laboratories, Co., Ltd.
    Inventors: Yoichi Taya, Katsuyuki Tamai, Toshiaki Miyazaki
  • Publication number: 20030215824
    Abstract: The invention provides novel XAF nucleic acid sequences. Also provided are XAF polypeptides, anti-XAF antibodies, and methods for modulating apoptosis and detecting compounds which modulate apoptosis.
    Type: Application
    Filed: November 5, 2002
    Publication date: November 20, 2003
    Applicant: Aegera Therapeutics Inc.
    Inventors: Robert G. Korneluk, Katsuyuki Tamai, Peter Liston, Alexander E. MacKenzie
  • Publication number: 20030082668
    Abstract: The acetylation level of a peptide is determined utilizing the fact that the changes in the acetylation level are reflected in the sensitivity of the substrate peptide to a peptidase. This method can be used for measuring activities of deacetylase and acetylase, and also enables screening for substances that influence the activity of these enzymes. The deacetylase activity can be measured by a simple procedure according to the present invention.
    Type: Application
    Filed: May 29, 2002
    Publication date: May 1, 2003
    Applicant: CYCLEX CO., LTD
    Inventors: Katsuyuki Tamai, Toshiaki Miyazaki, Emi Wada, Ayumi Tatsuzawa
  • Patent number: 6495339
    Abstract: The invention provides novel XAF nucleic acid sequences. Also provided are XAF polypeptides, anti-XAF antibodies, and methods for modulating apoptosis and detecting compounds which modulate apoptosis.
    Type: Grant
    Filed: July 14, 2000
    Date of Patent: December 17, 2002
    Assignee: Aegera Therapeutics Inc.
    Inventors: Robert G. Korneluk, Katsuyuki Tamai, Peter Liston, Alexander E. MacKenzie
  • Patent number: 6107088
    Abstract: The invention provides novel XAF nucleic acid sequences. Also provided are XAF polypeptides, anti-XAF antibodies, and methods for modulating apoptosis and detecting compounds which modulate apoptosis.
    Type: Grant
    Filed: June 19, 1998
    Date of Patent: August 22, 2000
    Assignee: Apoptogen Inc.
    Inventors: Robert G. Korneluk, Katsuyuki Tamai, Peter Liston, Alexander E. MacKenzie
  • Patent number: 5892982
    Abstract: An external expansion bus interface circuit is provided for connecting a peripheral to a micro control unit to exchange digital information under an external expansion memory mode of the micro control unit. For this purpose, the eternal expansion bus interface circuit includes a means for storing a writing data. Address decoder and a strobe decoder are connected to the micro control unit to directly receive the writing data, an address strobe, and a write strobe. Then the address decoder and strobe decoder produce a write enable signal for enabling the memory to store the data at address designated thereby.
    Type: Grant
    Filed: November 27, 1996
    Date of Patent: April 6, 1999
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Makoto Mitsuda, Akihiko Nakamura, Katsuyuki Tamai, Masao Okabe, Tsutomu Miyoshi, Masafumi Sato, Junji Soga
  • Patent number: 5038826
    Abstract: A three-way electromagnetic valve provided with a valve body, a movable member slidably disposed in the valve body, an actuator for driving the movable member, an opening-closing mechanism provided in an internal passage formed in the movable member. A clearance reducing portion is formed to reduce a gap created by a pressurized fluid entering the slide section or by the force of fastening and fixing the valve body, thereby limiting the leakage of the pressurized fluid.
    Type: Grant
    Filed: October 26, 1989
    Date of Patent: August 13, 1991
    Assignee: Nippondenso Co., Ltd.
    Inventors: Koichi Kabai, Katsuyuki Tamai
  • Patent number: 4833887
    Abstract: Intake and exhaust ports of an internal combustion engine possess respective turbine impellers, and an electrical rotary machine is formed on a rotary shaft connecting the impellers. Sensors are provided for sensing the loaded state of the engine at all times based on engine rpm and the amount of fuel supplied to the engine. When the engine is overloaded, the electrical rotary machine is made to operate as a motor to assist in the supercharging of the engine. When the engine load is not excessive, the rotary machine is made to operate as a generator to charge surplus energy, derived from the engine exhaust, in a storage battery.
    Type: Grant
    Filed: August 28, 1986
    Date of Patent: May 30, 1989
    Assignees: Isuzu Motors Limited, Hitachi, Ltd.
    Inventors: Hideo Kawamura, Katsuyuki Tamai, Shigeki Saito, Toshihiro Yamanaka
  • Patent number: 4827170
    Abstract: An electric generator for use in a turbocharger includes a rotor mounted on the rotational shaft of the turbocharger and comprising a single permanent magnet fitted in an outer cylindrical sleeve which prevents the rotor from breakage upon high-speed rotaiton thereof. The rotor also includes heat insulation between the permanent magnet and the rotational shaft. The heat insulation portion may be an air gap or a heat insulating member.
    Type: Grant
    Filed: April 21, 1987
    Date of Patent: May 2, 1989
    Assignee: Isuzu Motors Limited
    Inventors: Hideo Kawamura, Katsuyuki Tamai
  • Patent number: 4798257
    Abstract: An energy recovery apparatus for a turbo compound engine is provided having an exhaust turbine with a first rotary machine in an exhaust pipe of an internal combustion engine; a second rotary machine mounted on a wheel axle of a motor vehicle which is driven by the internal combustion engine, and an exhaust turbine coupled to the exhaust port of the first-mentioned exhaust turbine; and a third rotary machine operable as a generator. The energy recovery apparatus also includes a first sensor for detecting the speed of rotation of the internal combustion engine and a second sensor for detecting the load on the engine. The first through third rotary machines are controlled by signals from the sensors and efficiently utilize the exhaust energy carried by the exhaust gas discharged from the internal combustion engine.
    Type: Grant
    Filed: October 17, 1986
    Date of Patent: January 17, 1989
    Assignee: Isuzu Motors Limited
    Inventors: Hideo Kawamura, Katsuyuki Tamai
  • Patent number: 4757686
    Abstract: A motor/generator is mounted on the turbine shaft of a supercharger in an internal combustion engine. Whether the motor/generator should operate as a motor or a generator is determined by a signal from a flow rate sensor that detect the rate of fuel flow and a signal from a rotation sensor that detects rotation of the internal combustion engine. When the motor/generator operates as a generator, the fuel flow rate is controlled in response to an output signal indicative of electric power from the generator. When the motor/generator operates as a motor, electric power supplied thereto is controlled in response to an accumulated value of supplied electric power.
    Type: Grant
    Filed: August 29, 1986
    Date of Patent: July 19, 1988
    Assignees: Isuzu Motors Limited, Hitachi, Ltd.
    Inventors: Hideo Kawamura, Katsuyuki Tamai, Shigeki Saito, Toshihiro Yamanaka